[Increase in frequency of asthma in school children from Villahermosa, Tabasca, Mexico].
D001249:Asthma / Q000453:epidemiology*; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008800:Mexico / Q000453:epidemiology; D015995:Prevalence; D011795:Surveys and Questionnaires
Incremento de la frecuencia de asma en niños escolares de Villahermosa, Tabasco, México.